1 7 0 nuclear quadrupole resonance spectra have been measured in an l v O enriched polycristalline sample of DL-proline with the help of 1 H l v O nuclear quadrupole double resonance technique. The results show the presence of eight chemically inequivalent oxygen sites corresponding to four inequivalent proline molecules in the unit cell. The oxygen sites may be grouped into two sets of four si...

Among all kinds of journal bearings, the tilting pad bearing has characteristics high stability. In order to further reduce vibration and improve stability rotor-bearing systems, a novel double layers flexible support (DL-FSTPB) is presented in this paper. The utilizes two springs, which have different functions. offset springs control swing angle ensure formation convergent oil film, symmetric...

Double layers DLs have been observed in a plasma reactor composed of a source chamber attached to a larger expanding chamber. Positive ion beams generated across the DL were characterized in the low plasma potential region using retarding field energy analyzers. In electropositive gases, DLs were formed at very low pressures between 0.1 and 1 mTorr with the plasma expansion forced by a strongly...

Hepatitis B virus capsid (HBVC), a self-assembled protein nanoparticle comprised of 180 or 240 subunit proteins, is used as a cage for genetic encapsulation of fluorescent proteins (FPs). The self-quenching of FPs is controlled by varying the spacing between FPs within the capsid structure. Double-layered FP nanoparticle possessing cancer cell-targeting capabilities is also produced by addition...

Iron oxide nanoparticles (magnetite (Fe3O4), hematite (Fe2O3)) have been received increasing attention in drug and gene delivery. In this work, water-base double layer functionalized iron oxide nanoparticles (DL-IONPs) were designed and prepared of a biodegradable, biocompatible carrier by co-precipitation method with high DNA loading capacity due to self-assembly of a second organic layer. The...